Die set



1947- H. F. SCOVILLE ETAL 4 n15 ss'r Filed larch 28, 1945 2 Sheets-Sheet 1 P31. 23 I FEB. 35

HENRY LE AND FR fiNKLlN B. CLAY, LIE.

ATTORNEY Dec. 9, 1947.

H. F. SCOVILLE EI'AL 2,432,449

DIE SET filed larch 28, 1945 2 Sheets-Sheet 2 r 75 E2255 [6 i i 55 5/ :1 Z .4 if m 2 70 3% "7 Patented Dec. 9, 1947 UNITED STATES PATENT OFFICE DIE SET Application March 28, 1945, Serial No. 585,312

3 Claims. 1

The present; invention relates to a die set, particularly for the purpose of holding an article having a pocket, while the pocket is charged with powder or the like. The invention is especially adapted for the charging with incendiary powder of incendiary projectiles, these projectiles con sisting of a hollow body component having an internal thread at its upper end, and a hollow nose component having an external thread at its upper end and adapted to be screwed upon the upper end of the body component, both components being charged with incendiary powder.

It is an object of the invention to provide a die set in which the components may be engaged in relation to a funnel member constituting a part of the die set in such manner that the threads of the components are protected, so that powder is prevented from getting into the threads during the charging operation, and further to provide a die set which promotes an accurate and level powder charge.

A further object is to provide a die set which will enable the operators to place the components therein, preparatory to charging, with ac-- curacy, speed, and facility, it being pointed out that the die sets after being assembled with the components are automatically fed in a charging machine, which at one station charges them with a measured charge of powder, and at a successive station tamps the charge of powder to a predetermined level within the component. A charging machine of this character is disclosed in the United States patent to Forest W. Snodgrass for Projectile loading, No. 2,356,281, ranted August 22, 1944.

A further object is to provide a die set which will compensate for slight variations in the height dimension of the component within the permitted tolerance limits.

With the above and other objects in view, embodiments of the invention are shown in the accompanying drawings, and these embodiments will be hereinafter more fully described with ref erence thereto, and the invention will be finally pointed out in the claims.

In the drawings:

Fig. 1 is a vertical sectional view of a die set, according to the invention, for charging the body component of an incendiary projectile, being shown in cooperative engagement with the component.

Fig. 2 is a horizontal sectional view, taken along the line 2-2 of Fig. 1.

Fig. 3 is a vertical sectional view of a die set for charging the nose component of the incendiary projectile, being shown in cooperative engagement with the component.

Fig. 4 is a horizontal sectional view, taken along the line 4-4 of Fig. 3.

Fig. 5 is a side elevation, partially in vertical section, showing the charged body component.

Fig. 6 is a side elevation, partially in vertical section, showing the charged nose component.

Fig. 7 is a side elevation, partially in vertical section, showing the charged body and nose components, assembled.

Fig. 8 is a vertical sectional View of a die set, according to a modified form of the invention, for charging the body component of an incendiary projectile, being shown in cooperative engagement with the component.

Fig. 9 is a vertical sectional view of a die set, according to the modified form of the invention, for charging the nose component of the incendiary projectile, being shown in cooperative enga-gement With the component.

Fi 10 is a side elevation, partially in vertical section. of the funnel holder forming part of the die set as shown in Figs. 8 and 9.

Fig. 11 is a top plan view of the funnel holder.

Fig. 12 is a side elevation, partially in vertical section of the insert member for interlockingly receiving the funnel holder.

Fig. 13 is a top plan view of the insert member.

Fig. 14 is a top plan view of the body charging funnel member.

Similar reference characters indicate corresponding parts throughout the several figures of the drawings.

Referring to th drawings, particularly to Figs. 1 to 4 thereof. the die set, according to the i1lustra-ted exemplary embodiment of the invention shown therein, comprises cooperating pairs of die and funnel members for respective coopera-tive engagement with two parts of a hollow article to be charged with powder or the like, each having screw threads for attaching one part to the other. In particular, the invention is especially adapted for the charging of incendiary projectiles, these consisting of a body component and a nose component, the body component H] having at its upper end an internal screw thread i I extending downwardly to an internal shoulder 12, and a powder receiving pocket l3 extending do 'nwardiy from the shoulder l2, and the nose component l4 having an external screw thread 15 for engagement with the internal thread of the body component, an abutment shoulder l6 for engaging the upper end of the body component in assembled position, and a powder receiving pocket ll surrounded at its mouth by an annular end surface 18.

The body charging pair of the die set comprises a cup shaped die member 19 having a cylindrical cavity 20 and a cylindrical funnel member 2i engaged in the cavity with a slip fit. The base of the iCEWityZi isprovided centrally with'a cylindrical-pocket 22 to receive 'and position the base of the body component ill. The funnel member 2| is provided with a downwardly extending conical entrance passage 23 connectin at its lower end with a cylindrical passage of corresponding diameter to thepocket lii of the body component, this passage :24 .extending through a cylindrical barrierwall Efaprovided in the upper end. of the upwardly extending body receiving passage 25 of the funnel member. The barrier wall is inwardly spaced from the cylindrical wall of the passage 26 to provide at the upper end of the passage an annular pocket 21 in .wliich'is engaged the internally threaded upper end of the body component,-thelower end of the barrier wall "seating firmly upon theshoulder l2 of the body, so that thethreads I are sealed oiT from the charging passage of the funnel member and the pocket i3 01? the body component.

.Inoperation, the body component is assembled with the die set and thereuponfeeds automatically'through the charging and tamping ma- .chine, a measured charge of incendiary powder being fed into the pocket l3tthrough the funnel member. This measured charge reaches a level within the passages 24 above the upper end of the pocket l3, being thereupon tamped by insertion of a suitable tamping tool'into the passage 24 to compress the chargesubstantially to the level of=the shoulder l2, as shown in Fig. 5. Following the charging and-tamping operations the funnel member is disengaged and the projectile body removed. Slight variations in the height dimension of the body component will be compensated for by the slip fit of the funnel member with the die member.

The nose charging pair of the die set comprises a die member 28 provided with an annular cavity 29 surrounding a central pedestal portion '39, and adapted to'receive the funnel member 3! with a slip fit, the funnel member being provided with a passage 32 extending upwardly from its lower-end'for engagement by the pedestal portion 30. The pedestal portion is provided with a conical "pocket *33 for receiving the nose component I4, a cylindrical passage 34 extending downwardly from the pocket 33 to the lower end 'rof' the die for'thepurpose of receiving a suitable nose removing rod. The funnel member 3! is provided with a downwardly extending conical entrance passage 35 connecting at its lower end with a cylindrical passage '36 of corresponding diameter' to the diameter of the upper end of the "pocket "of the nose component, this passage 35 "extending through a cylindricalbarrier wall 37 provided in the upper end of the passage 32. This-barrier wall seats firmly upon the upper end "surface-I8 of the nose component, and thus efiec- 'tually "seals off the external screw threads l5 from the'funnel passage 35 and the pocket I! of'thenose component, so that powder will'be "prevented from coming into contact with the threads.

:.In operation, measured charge of powder is "fed'into the nose component and reaches'a level within the passage 35 above the end surface l8 ofthe component, being thereupon tamped to "compress itsubstantially tothe level 'o'f'the end surface I8, as shown in Fig. 6. Thus, when the components are assembled, as shown in Fig, 7, the charges of powder within the body and nose components substantially meet to fill the. projectile.

In Figs. 8 to 14, there is illustrated a modified form-of the invention, wherein ithe cooperating die-and funnel parts cit-thedie set areadapted to be engaged in interlocking relation, as distinguished from the slip fit of the die set shown in .Figs. 1 to 4. The body charging pair of the die set comprises a die holder 38 of cylindrical cup :shape:provided'centrally within its base with a threaded passage 39, and within this die holder there is secureda cylindrical insert member 40 provided in its upper side with a cylindrical 3pOCket=4 l having within its base a threaded passage 42 forming an upward continuation of the threade'd passage 39 of the die holder.

The die holder 38 is provided in its side wall adjacent its base with a threaded hole 43.:forireceiving a positioning set-screw= 44 and whichengages :a threadedv hole 45 in the insert,- member :49; the-inner end of the set screws'engagin twithin an annular groove fi'fi of'a threaded. diem'ember 41 engaged within the threaded passages '39 and 42. The insert memberis provided above the threaded hole 45 with an'additional threaded hole H3, for the purpose of cooperation with the dieholder of the nose charging pair of'th'e die set,.illustrated in Fig. 9, and :as will hereinafter more fully appear. In radially spaced'relation'to the'threaded'holes* t3, 45 and 48 the die holder and .insert are'provided with :additional holes 43 45 and 43 "fo1'..receiving an additional set screw 44*- alsoenga'ged in the annular groove '46 of the die imemben for'the purpose of additionally securing the 'insert member "and the die member'with respect to the die'hol-der.

The die "member 41 is provided centrally in'its upper side with a cylindrical pocket 49 formceiving and positioning the base ofthe body component H1, and? in its lowersideis provided with a'pair'of sockets 5%35ll for receiving a suitable wrench'for the purpose of vertically a'djusting'the die member, the annular groove' flB having limited clearance with respect to the setsci'ew $3; so that thedie member may be vertically adjusted within predetermined limits to compensate "for variations in "the height dimension of "the body "component within the permitted tolerance limits.

The cylindrical pocket 4! (if the insert member is provided with' internal interrupted threads 5| for interlocking engagement by the external interrupted threads 52 of a funnel holder 53, this funnel holder being provided 'in itsupper 'end with an internally threaded'pocket"54 provided centrally in its base with'a cylindrical passage 55 for receiving the upper "end of the body component ll], the passage 55 extending to a body receiving passage '55 in the lower end of the'funnel holder.

The funnel member 51'is'provide'dwithan'exiternally threaded intermediate portion 58 adapted to be screwed into the "threaded passage 54, an upper flange portion 59 adapted to seat'upon the upperend of the funnel holder, and a downwardly extending'barrier wall portion 68 engaged within'the passage 55 of the 'funnel'holder. A conical entrance passage'tl extends downwardly from the upper end of the funnel member and connects with a cylindricalpassage 62 extending through the barrier wall portion 6fl'and correspending in diameter to the pocket I3 of the' body component. The flange 51 of the funnelmemher is preferably provided with a flat surface 63 for convenient engagement of a wrench therewith. Set screws 64 in the funnel holder secure the funnel member in its assembled relation,

The operation is substantially similar to the body charging pair of the die set shown in Fig. 1, except that instead of the slip fit of the funnel member, the funnel member together with the funnel holder are interlockingly engaged with the insert member 3-0 of the die holder by vertical engagement and rotation of the funnel member to cause the interrupted threads 5| and 52 to interlock.

The nose charging pair of the die set, shown in Fig. 9, employs the same funnel holder 53 and insert member 40, as employed in the body charging pair of the die set as shown in Fig. 8, and has assembled therewith a die holder 65, a die member 65, and a funnel member 51, especially adapted for cooperation with the nose component. The die member 66 is provided with an annular groove 58 substantially in line with the upper threaded holes 48 and 48 of the insert member, and the die holder 65 is provided with threaded holes 69 and 59 in line with the upper holes 48 and 48*, the set screws 44 and 44 being engaged through the holes 69, '59 and 48 and 48 to secure the insert and being engaged in the groove 68 to secure the die member.

The die member is provided with an upwardly extending pedestal portion which engages within the passage 56 of the funnel holder, and within this pedestal portion there is provided a conical pocket II for receiving the nose compcnent, a vertical passage 12 extending downwardly from the lower end of this pocket for insertion of a suitable nose removing rod. The funnel member is provided With a downwardly extending conical entrance passage 13, connecting with a passage 74, corresponding in diameter to the diameter of the upper end of the pocket I! of the nose component and extending through a cylindrical barrier wall 15 disposed within the passage 55 of the funnel holder, the lower end of this barrier wall seating firmly upon the end surface l8 of the nose component, to prevent powder from reaching the threads l5 in substantially the same manner as the nose charging pair of the die set shown in Fig. 3.

The form of the invention illustrated in the drawing and described herein is typical and illustrative only, and it is evident that the invention is capable of embodiments in other forms, all falling within the scope of the appended claims, which are to be broadly construed.

What is claimed is:

1. For charging an article having a charge receiving pocket, screw threads circumferentially ofiset outwardly from said pocket, and an annular seating surface between said pocket and said threads; a die set comprising a cup shaped die member having article positioning means centrally within its base; and a funnel member axially engaged with said die member, said funnel member having a funnel passage adapted to be axially aligned with the pocket of said article, and a barrier Wall surrounding said passage and having an annular end surface engageable with said annular seating surface of said article and adapted to constitute a barrier between said passage and the said screw threads of said article.

2. For charging an article having a charge receiving pocket, screw threads circumferentially offset outwardly from said pocket, and an annular seating surface between said pocket and said threads; a die set comprising a die holder, a die member engaged in said die holder for axial adjustment therein and having article positioning means; and a funnel member axially aligned with said die member, said funnel member having a funnel passage adapted to be axially aligned with the pocket of said article, and a barrier wall surrounding said passage and having an annular end surface engageable with said annular seating surface of said article and adapted to constitute a barrier between said passage and the said screw threads of said article.

3. For charging an article having a charge receiving pocket, screw threads circumferentially offset outwardly from said pocket, and an annular seating surface between said pocket and said threads; a die set comprising a die holder, a die member engaged in said die holder for axial adjustment therein and having article positioning means; a funnel member axially aligned with said die member, said funnel member having a funnel passage adapted to be axially aligned with the pocket of said article, and a barrier wall surrounding said passage and having an annular end surface engageable with said annular seating surface of said article and adapted to constitute a barrier between said passage and the said screw threads of said article: and cooperating interlocking means respectively carried by said die holder and said funnel member movable one with respect to the other into engaging and disengaging relation.

HENRY F. SCOVILLE. FRANKLIN B. CLAY, J a.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,427,137 Vollmer Aug. 29, 1922 2,357,863 Young et al Sept. 12, 1944 1,778,783 Young Oct. 21, 1930 2,311,694 Rogers Feb. 23, 1943 

